1131653508 has 12 divisors (see below), whose sum is σ = 2640524880. Its totient is φ = 377217832.

The previous prime is 1131653503. The next prime is 1131653531. The reversal of 1131653508 is 8053561311.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1131653503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47152218 + ... + 47152241.

It is an arithmetic number, because the mean of its divisors is an integer number (220043740).

Almost surely, 2^1131653508 is an apocalyptic number.

It is an amenable number.

1131653508 is an abundant number, since it is smaller than the sum of its proper divisors (1508871372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1131653508 is a wasteful number, since it uses less digits than its factorization.

1131653508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94304466 (or 94304464 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 1131653508 is about 33640.0580855622. The cubic root of 1131653508 is about 1042.0882314708.

The spelling of 1131653508 in words is "one billion, one hundred thirty-one million, six hundred fifty-three thousand, five hundred eight".